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(No Model.) 4 SfieetsSheet 1. A. BACON. MECHANISM FOR CUTTING DOUBLEPILE FABRIGS-.

No. 359,048. Patented Mar. 8. 1887.

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(No Model.) 4 Sheets-Sheet 2 A. BACON.

MECHANISM FOR CUTTING DOUBLE PILE FABRICS. No. 359,048. Patented M21128,1887;

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4 Sheets-Sheet; 3.

(No Model.)

A. BACON.

MECHANISM FOR CUTTING DOUBLE PILE FABRICS. No. 359,048.

Patented Mar. 8, 1887 MONRN f lawn/601: red/ v73600011, '6 71/013JZZZorrwy-s WEN/eases I wAZZdz/vvo 8,

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(No Model.)

4 sheets sheet 4. A. BACON.

MECHANISM FOR CUTTING DOUBLE PILE FABRICS.

Imenibr Jlgred ificwon 6y 7003 VZEZOIWS Wzlness e6 1 UNITED STATESPATENT OFFICE.

ALFRED BACON, OF PHILADELPHIA,

PA., ASSIGNOR TO GEORGE F. BEOH- MANN, FRANKLIN L. OARNELL, AND SAMUELALLEN, ALL OF SAME PLACE.

MECHANISM FOR CUTTING DOUBLE PlLE FABRICS.

SPECIFICATION forming part of Letters Patent No. 359,048, dated March 8,1887.

Application filed May 27, 1886. Serial No. 203,406. (No model.)

To all whom it may concern:

Be it known that I, ALFRED Bacon, a citizen of the United States,residing in PhiladeL phia, Pennsylvania, have invented certainImprovements in Mechanism for Cutting Double PileFabrics, of which thefollowing is a specification.

The object of my invention is to provide mechanism for rapidly andaccurately severm ing double pile fabrics, the device having beenspecially devised for severing the fabric in the loom in which it iswoven, and the main features of the device being the steady movement ofthe cutter, evenness of wear of the operat :5 ing parts, and themaintenance of a proper cutting-edge at all times upon the knife.

In the accompanying drawings, Figure 1 is a side view of sufficient of aloom to illustrate the construction and mode of application of myimproved device for severing the double pile fabric produced by theloom. Fig. 2 is a front view with the sharpener for the cuttingkniferemoved. Fig. 3 is a plan view. Fig.

. 4 is a perspective view of the devices forming the subject ofnay-invention, the knife-sharpener being detached from its supports.Fig. 5 is a transverse section on the line 1 2, Fig. 3, but on a largerscale than said figure; and Fig. 6 is a diagram illustrating one of thetea tures of the invention.

A is the breast-beam of the loom, and A a transverse bar supported abovethe beam so as to provide a space, through which passes the doublefabric connected by the pile-threads.

55 Parallel with the beam A, and a short distance in front of the same,is a bar, B, which is carried by projecting brackets x, and forms aguide for a slide, D, the latter carrying a stud, on which is free toturn a spur-wheel,

0 c, to the upper face of which is secured a circular cutter, F, saidspur-wheel engaging with a rack, b, secured to the upper face of theguidebar B, so that as the slide D is caused to reciprocate transverselyin the guide a rapid rotary motion, first in one direction and then inthe opposite direction, will be imparted to the cutting-disk F.

One end of the slide D is connected to one end of a belt, G, whichpasses around pulleys d, suitably supported on the frame of the loom,

the opposite end of said belt being connected to a stud, f, projectingfrom one of the links of a chain-belt, H, adapted to sprocket-wheels I,mounted upon studs g secured to and projecting from the loom-frame. Asimilar belt, G, passing around like pulleys d, serves to connect theopposite end of the slide D to the stud f, so that when rotary motion isimparted to one of the sprock et-Wheels I the studf, traveling with thebelt H, will, through the me dium of the belts G, impart a transversereciprocating movement to the slide D, and thus cause the cutter F topass to and fro through the web of fabric, so as to cut the pile-threadsand separate the compound fabric into two sin- 6 gle fabrics, eachhaving a cut-pile surface.

In order to insure the uniform cutting of the pile it is necessary thatthe movement of the slide and its cutter shall be smooth and steady, asanyjarring or jerking of the slide 7 or cutter causes irregularity inthe cut and unevenness in the length of pile on the fabrics produced.This smooth and steady movement I secure by means of the drivingmechanism shown, as there is a gradual diminution in the speed of theslide at and near each end of its traverse and a gradual acceleration ofspeed as it starts on the return movement, this result being due to thepassage of the stud f around the sprocket-wheels I, for while the studis 83 traversing a quarter of the circumference of the said wheel-thatis to say, from 1 to 2 or from 2 to 3, Fig. 6the actual transversemovement of the slideD is equal only to the radius of the wheel-that isto say, from 2 to 4, Fig. 85 6while at all other points in the traverseof the stud f the movement of the slide is equal to the surface speed ofthe sprocket-wheels.

The brackets :0 are provided with projecting pins g, serving as guidesfor the journal-boxes g of rolls J J, between which projects-thecutting-edge of the knife F, the boxes 9 being acted upon by springs h,so as to press the rolls J J toward each other and into contact with theopposite sides of the knife.

The rolls J are formed of or coated with abrading material, and are ofsuch a length as to extend throughout the traverse of the knife, so thatthe cutting-edge of the latter is at all times under the sharpeninginfluence of the rolls, and a keen edge is therefore maintained, therebeing no tendency to nick the edge of the knife or interfere with theperfect truth of its movement, as in that class of cutters in which theknife is carried between a pair of sharpening-blocks at each end of itsmovement. Rigid bars or rods may replace the rolls, if desired; but thelatter are preferred, because of the facility with which a newsharpening-surface may be presented by partly rotating the rolls.

The construction of the loom and the mode of driving the belt H form noessential part of my invention; but in the drawings I have shown, and Iwill now describe,'one methodof construction which may be adopted.

K is the crank-shaft of the loom, vibrating the lathe K, as usual, thisshaft driving by means of spur-wheels i and i the lower shaft, L, abevel-wheel, k, on which engages with a bevel-pinion, on a shaft, M, thefront end of which has a sprocket-wheel, m, a chain-belt, m, engagingtherewith and with a sprocketwheel, m secured to or forming part of oneof the sprocket-wheels I. A pimp, on the lathe actuates an arm, P, apawhp, on which engages with a ratchet-wheel, n, which has a pinion, n,engaging with a spur-Wheel, N, the shaft of which has a pinion, N,gearing into a spur-wheel, S, on the lower draft-roll, S, the upperdraft-roll, T, having a spur-wheel, T, meshing with the wheel S. Thecloth-roll V is driven by a belt, V, from the draft-roll S.

Although I prefer the use of the rotary cutter shown and described, afixed cutting-blade may be used in place of the same, if desired, and myinvention may be applied toa machine for cutting double pilefabricsinstead of being used directly in connection with the loom inwhich the fabric is Woven.

In endless-belt cutters which have been here tofore employed it has beenthe practice to secure the cutter directly to the belt, and as the knifein this case can only cut while being carried forward-say from therighthand pulley to the left-hand pulley-all of the return movement ofthe cutterthat is to say, from the left hand pulley to the righthandpulleyis unavailable for cutting purposes, and Where the cuttercarryingslide is guided this is aspecially objectionable feature, for the reasonthat the guide must extend throughout the entire path traversed by thecutter, thus creating a large amount of friction. By providing the slidewith a ,cut-

ter acting in both directions and connecting said slide to theoperating-belt, as set forth in my specification, however, I am enabledto impart a reciprocating movementto the slide, and thus permit thecutter to act almost continuously upon the fabric, the extent of theguide for the cutter-slide being reduced to a minimum and excessivefriction prevented.

I claim as my invention- 1. The combination, in a device for cuttingdouble pile fabrics, of a cutter constructed to cut when moved in eitherdirection across the fabric, a cutter-slide, a guide for thelatter, anendless belt and means for supporting and driving the same, and devices,substantially as described, for connecting said belt to thecutter-slide, whereby a forward and backward movement in the same pathis imparted to the slide, all substantially as specified.

2. The combination of the cutter, the slide and a guide therefor, theendless belt and its pulleys, the stud on said belt, the belts or bandsconnecting the slide to said stud, supporting-pulleys for said belts orhands, and means for driving one of the pulleys of the endless belt, allsubstantially as specified.

3. The combination of the circular cuttingknife, a spur-wheel connectedthereto, a slide having a stud on which said spur-wheel is free to turn,a fixed rack, with which the spurwheel engages and by which it isrotated as the slide reciprocates, an endless belt having a projectingstud, means for connecting said stud to the knife-carrying slide, andmechanism for driving the endless belt, all substantially as specified.

4. The combination, in a device for cutting double pile fabrics, of acircular cutting-knife, a slide carrying the same, and mechanism forreciprocating the slide and rotating the knife, with a sharpenerextending throughout the length of travel of the cutter, wherebythelatter is subjected to a continuous sharpening action, all substantiallyas specified.

5. The combination, in a device for cutting double pile fabrics, of .acircular cutting-knife, a slide carrying the same, and mechanism forreciprocating the slide and rotating the knife, with sharpening-rolls,between which the cuttingedge of the knife projects, said rollsextending from end to end of the traverse of the knife, allsubstantially as specified.

In testimony whereof Ihavesigned my name to this specification in thepresence of two subscribing witnesses.

ALFRED BACON.

Witnesses:

WILLIAM D. OONNER, HARRY SMITH.

